Means for automatically stopping gramophones.



F. ERTUCK. AUTOMATICALLY STOPPING GRAMOPHONRS. APPLICATION FILED mnzr.x915.

MEANS FOR m z k H V g E w M I W A M 1 w m w m if v M 0,, W I 2 1 N B y 1M u U y I H W 2 7 FREDERICK ERTUCK, OF PETONE, NEAR WELLINGTON, NEWZEALAND.

MEANS FOR AUTOLZATICALLY STOPPING GRAMOPHONES.

Specification o r Letters P n Patented Aug. 29,1916.

Application filed April 27, 1915. Serial No. 24,202.

Toff 'ur/iom it may concern.

lle it known that T, FREDERICK Enrncn, subject of the Emperor of Russia,residing at No. 400 Jackson street, Petone, near Wellington, NewZealand, have invented h new and useful ImprofementinMeans forAutouuitically Stopping Gramicphones; and I do hereby declare tetolloiving to be a full, clear, and exact d eriPtiOn-Ofithe same.

This invention relates to means for automatically stopping gramophoneswhen the record. is finished.

According to this invention, a member is pivoted beneath the turntableupo'n the record disks are carried. ..The member is pivoted at or-nearits center to the t4):

of the grarnophone casing. Guides may provided for guiding the ends ofthe, mem- .her which is preferably of a bell crank i The rear end of thepivoted membergis 7 extended a required distance beyond t ",pe

riphery of the turntable and against it an arm depending from the tonearm is adapted to strike. Upon the depending arm strik; ing the rear endof the pivoted member the forward end of the-said pivoted member willrelease a spring contr lled bufler which will impinge against theperiphery of. the turntable and thereby stop' said turntable by means ofa brake action; v j

The invention will be'fully illustrated in the accompanying drawjings'wherein Figure 1 is a planflgnd Fig. 2 a side elevation of a portion of'a'jg'ramophonc having the invention applied thereto. "Fig. 3 s an endelevation of the striking arm. Fig. 4

is a detail plan, and. Fig. 5 a sectional elevation of the stoppingmechanism. I

Referring to the drawings,the horizontal member 1 is pivoted at ornear-its center upon a pin 2 mounted in a bearing 3 fixed to the top ofthe gramophone casing 4. The

member is arranged below the turntable 5 as clearly indicated and ispreferably of a bell crank shape as shown. Guides 6 are provided inwhich the ends of the member are guided. The rear end of the member 1 isextended a suflicient distance beyond the turntable 5 so as to enable itto be operated by a striking arm 7 projecting downwardly from the tonearm 8. \Vhen the rear end of the member 1 is struck by the depending arm'7 the front end of the memher i will operate and release a spring con-515* trolled brake bufl'cr 9 having a buifer end of leather or the likeand so cause the end of the member 1 and the buffer will now bedescribed. The butler 9 is slidable in a sleeve 11 fixed'to a bracket 12Whichniay be fastened to the top of the casing '4 by screws 13. ,Ashoulder'll is provided upon '-.tl1e front end of the buffer while acoil spring 15 in compression between this shoulder: and a shoulder 16formed u on the inter1o r of the sleeve normally ten 5 to project "the'bufi'er outward.

Depending from the butler and through slot'17'in the sleeve-11 is a pin18 which 15 carries a roller 19. A cam lever 20 having fa. cam face 21is pivoted in the bracket 12 -byarpin 22. This leveris extended in themanner shown in Fig. 4 and is provided 9 with a slot 23 in its end. Inthis slot an integral pin 24 of the pivoted member 1 engages. A knob orbutton 25 is fixed upon the .pin 24 for operating the device by hand. In"order to obtain a positive striking action against the rear end of themember 1' the record disks, one of which is designated by the numeral 26in the drawings, are provided with central unoccupied portions 27 ofuniform diameter while the phonic lines finish a suitable distance fromthis unoccupied portion. A groove 28 having a suitable curve starts fromthe point Where the phonic line finishes and runs to the edge of theportion 27. This groove guides the stylus 29 rapidly in a transversedirection towardthe center of the record disk. The transverse travelimparted to the tone arm by'the above action causes the striking arm 7to contact with the rear end of the member 1 and operate said member torelease the buffer 9.

When starting the gramophone the buiicr is held in that position by thecam face 21. of the'lever 20 until such time as the pivoted member isoperated by the depending arm 7. The lever will be thrown over in the direction indicated by the arrow in Fig. 4 thereby freeing the roller 19from the inner face of the cam and allowing the buffer 9 to move forwardunder the pressure of the spring 15. Both the starting and stopping ofthe turntable may be effected by hand in the ordinary manner with thisdevice.

I claim:- 1. The combination in a. gramophone of a is set free from theturntable by hand and turntable, a casing, aswinging member carried uponsaid casing, a striking arm depending from said swinging member, ahorizontal member pivoted at or near its center to the said casing belowsaid turntable and-V spring operated buli'er, and adapted to'bedisengaged from the tension of the buffer when the pivoted member isoperatedby the striking-arm, substantially as set forth;

2: The combination in a gramophone of a casing, a turntable, a swingingmember car- "ried upon said casing, a striking arm depending fromsaidswinging member, a horizontal member pivoted at or near itseenter tothe said casing, the rear end of said member projecting beyond theturntable and adapted to be operated by the said striking arm, a leverto which the frontend' of said pivoted member is pivotally' connected,:1

s)i'in o erated buffer carried in a sleeve fixed to-the casing, a pinprojecting from" said spring operated buffer through said sleeve, a.roller pivoted upon sa-idpin', said roller engaging upon a cam face inthe said lever whereby said spring operated buffer is retained out ofengagement with the turntable while the said roller is resting upon theby said horizontal member and is projected forward and engages theturntable, substantially as set forth.

3. In an automatic stop mechanism for gra'mophones, a casing, aturntable, a svvlnging member carried upon said casing, a striking armdepending-from said swinging member, a horizontal member pivoted at ornear its center to the. said casing, guides fixed to the casinginorder"to support the said horizontal member,. the rear end of saidmember projecting beyond the turntable and adapted to be operated by thesaid striking arn1,a lever to which the front end of said pivoted memberiispivotally connected, a spring operated buffer, said lever adapted toretainsaid spring-operatedbufler out of engagement with the turntableand to allow v the saidbufi'er tobe projected for'ward and engage :theturntable when said pivoted member is operated by the striking arm,sub-

sta itially as set fortln j i In testimony whereof, I have signed thisspe'eification in the ing witnesses.

'1 R-E ERICK ERTUCK.

Witnesses g Eozuosn Pivruicic ODONNE I Rownxa vvALL. 1

presence of two subscrib-

